Btjdolf e



- R. BLWOQD I H & 0. LANGBE-IN.

(M OdeL) LOOK.

Patented Mar. 4 1884.

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NITED STATE PATENT OF ICE.

RUDOLF E. w'ooDnIoH, OF NEW YORK, AND CHARLES LANGBEIN, or

BROOKLYN, N. Y.

LOCK.

SPECIFICATION forming part of Letters Patent No. 294,560, dated March 4, 1884.

Application filed April 25, 1883. (Model) To all whom, it may concern.-

Be it known that we, RUDOLF E. WOODRICH,

I of the city, county, and State of NewYork,

and CHARLES LANGBEIN, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Look, of which the following-is a full, clear, and exact description.

The object of our invention is to provide a new and improved lock which can be secured and held in place without the use of screws, which can be adjusted at different lengths, and which look can be adjusted to operate from one side of the -door only.

The invention consists in alock constructed with an extensible casing and bolt, which bolt rests on independent pivoted cam-plates adjusted to be turned by a key inserted through escutcheons screwed into screw-threaded aperture in the casing, thereby holding the casing in place in the drawer or door.

Reference is to be had to the accompanying the cams detached from each other.

The lock is constructed with a cylindrical casing, A, closed at the lower end, and provided at the upper end with an aperture, through which the sliding bolt 13* can pass. The casing is constructed of two tubular sections, a a, of which the former is screwed into the latter; and the bolt B is composed of two sections, 1) b, of which the latter is screwed into the lower end of the former. The lower end of the boltsection'b is provided with a convex or like head, 0, between which and the end of the casing A a spiral spring, D, is held, which surrounds the bolt and draws the same in the easing. The casing-section a is provided near its lower end with two diametrically-opposite apertures, into which screw-threaded escutch eons E are screwed, which are passed through apertures in the opposite side of the door or drawer F. The escutcheons are provided at the outer ends with flanges provided with apertures or slots for receiving the ends of a suit able key for screwing the escutcheons into the threaded apertures in the casing. Apintle, G, held transversely in the upper end of a standard, H, projecting from the bottom of the casing-section (6, projects into the escutcheons. On each side of the standard H a cam-plate, J, is loosely mounted on the pintle G, and at one end the two cam-plates are held together by a screw, K. The cam-plates are slightly larger than a semicircle.

or recesses 76, of any suitable size or shape for receiving the end of a key. The casing-section a is provided with vertical slots M and with vertical recesses N, through which the ends of the cam-plates can pass. The greatest diameter of the cam-plates must not be greater than the outer diameter of the casing-section a.

The operation isas follows: A hole is made in the edge of the drawer or door F, and'from each side a hole is'made leading into the lower part of the above-mentioned hole. The tubular casing A is inserted into the edge-hole and the escutcheons E are screwed through the side holes into the screw-threaded holes in the casing. Thereby the lock-casing will be held in place without the use of screws, nails, or other analogous devices. The lock can be fastened in the drawer or door and removed from the same very easily. It frequently happens that it is desirable .to have escutcheons at a certain point of the door or drawerthat is, a

At the central ap erture each cam-plate is provided with apertures j greater or less distance from the edge of the drawer or door-and this can be done in using our look, as the casing A and the bolt B can be lengthened or shortened very easily accordingly, as they both consist of two sections, which can be screwed into each other more or less until the desired length is obtained. If the door or drawer is to be locked, the key is introduced into one of the escutcheons, and by means of the said key the cam-plates are turned be inclined, and cannot be swung back in the reverse direction of the arrow a" by exerting a pressure on the bolt. If the bolt is to be withdrawn, the cam-plates must be turned in the reverse direction of the arrow 0; by means of the key. The spring D will then draw the bolt into the casing. If the screw K is removed, the two eannplates will be independent of each other, and only one can be turned by means of the key. It the bolt is thrown from one side of the door, it cannot be withdrawn from the outer side. The lock can thus be ad justed Very easily for use as a safety-lock tor instance, for doors which are to be locked by the occupant of a room from the inside only.

Any suitable kind of a key can be usedwith our improved lock.

Having thus described our invention, we claim as new and desire to secure by Letters Patenting of two partsa inain ease and an extension cylindrical in the direction of the bolt-o1' the main ease having a hole through it cross 1 wise to receive the key, and provided with a and the edge of the door to adjust a lock-ease to different situations.

The combination, with a leck-caselongi- 3 tudinally extensible between its key-hole and its outer end, of a bolt consisting of two cylindrical parts provided with telescoping screw-threads, whereby the length of the bolt may be adjusted to the length of the lock-case, .40 as described.

3. In a lock, the combination of the case A, the bolt B, the standard H on the bottom of the casing, the pintle G in the standard, and the earn-plates J J, mounted independently 45 and loosely on the said pintle, with the screw K, adapted to unite the two cam-plates, as described, whereby the lock is adapted to be operated at one side independent of the other or to be operated from both sides, as set forth. 5o

4. The combination, with a tubular lockcase, of a bolt having a head at its lower end, 1. The combination, in a loekcase consista spring forcing the bolt downward, and independently-mountcd cam-plates adapted to be screwed together, so as to be both worked from 5 either side, or disconnected, so that each may be locked and unlocked only from its own side, as described,

RUDOLF E. WOODRIGH. CHARLES LANG 3EIN.

lVitncsses:

OSCAR F. Gem, 0. Snnewrcn. 

